Organic Chemistry in Its Applications to Agriculture and PhysiologyTaylor and Walton, 1840 - 387 páginas |
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Términos y frases comunes
absorbed acetic acid affinity alcohol alkalies ammonia animal ashes assimilation atmosphere atoms attraction azotised beer blood body capable carbonic acid cause cent charcoal chemical action coal colour combustion common completely composition compounds condition consequence constituents containing nitrogen converted cubic decay decom decomposed dissolved earth effect elements of water enter into combination eremacausis evaporation excrements exist extracted fermentation formation gluten growth heat Hessian humic acid humus hydrocyanic acid hydrogen influence inorganic insoluble juice kind leaves lime liquid magnesia manner manure matter nitric acid nitrogen nourishment nutrition obtained oxalic acid oxygen oxygen gas peculiar phosphate plants poison possess potash present produced proportion putrefaction quantity of oxygen roots salts seeds soil soluble solution stances starch substances containing sugar sulphuric acid tained temperature tion transformation undergo urine vegetable vital principle volatile wheat whilst wine wood woody fibre yeast yield
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Página 195 - Hence it is evident that it would be of much importance to agriculture if none of the human urine were lost.
Página 46 - The property of woody fibre to convert surrounding oxygen gas into carbonic acid diminishes in proportion as its decay advances, and at last a certain quantity of a brown coaly-looking substance remains, in which this property is entirely wanting. This substance is called mould ; it is the product of the complete decay of woody fibre.
Página 86 - ... dissolved by water, and imbibed by their roots. The evident influence of gypsum upon the growth of grasses — the striking fertility and luxuriance of a meadow upon which it is strewed — depends only upon its fixing in the soil the ammonia of the atmosphere, which would otherwise be volatilized, with the water which evaporates...
Página 201 - When it is considered that With every pound of ammonia which evaporates, a loss of 60 lbs. of corn is sustained, and that with every pound of urine a pound of wheat might be produced, the indifference with which these liquid excrements are regarded is quite incomprehensible.
Página 7 - ... unnecessary : the obvious difference in the growth of plants according to the known abundance or scarcity of HUMUS in the soil, seemed to afford incontestable proof of its correctness. * Yet, this position, when submitted to a strict examination, is found to be untenable, and it becomes evident from most conclusive proofs, that humus IN THE FORM IN WHICH IT EXISTS IN THE SOIL, does not yield the smallest nourishment to plants.
Página 184 - The most easy and practical mode of effecting their division is to pour over the bones, in a state of fine powder, half of their weight of sulphuric acid diluted with three or four parts of water...
Página 182 - We could keep our fields in a constant state of fertility by replacing every year as much as we remove from them in the form of produce; but an increase of fertility, and consequent increase of crop, can only be obtained when we add more to them than we take away.
Página 47 - Each new radicle fibril which a plant acquires may be regarded as constituting at the same time a mouth, a lung, and a stomach. The roots perform the functions of the leaves from the first moment of their formation : they extract from the soil their proper nutriment, namely, the carbonic acid generated by the humus.
Página 182 - From the foregoing remarks it will readily be inferred, that for animal excrements, other substances containing their essential constituents may be substituted. In Flanders, the yearly loss of the necessary matters in the soil is completely restored by covering the fields with ashes of wood or bones, which may or may not have been lixiviated, and of which the greatest part consists of phosphates of lime and magnesia.
Página 153 - ... but other substances, besides alkalies, are required to sustain the life of plants. Phosphoric acid has been found in the ashes of all plants hitherto examined, and always in combination with alkalies or alkaline earths.